package cn.easybay.service.order;


import cn.easybay.util.ShoppingCart;

/**
 * Created by bdqn on 2016/5/11.
 */
public interface CartService {

    public ShoppingCart modifyShoppingCart(String productId, String quantityStr, ShoppingCart cart) throws Exception;

    public ShoppingCart calculate(ShoppingCart cart)throws Exception;
}
